Commenced in January 2007
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Layout Design Optimization of Spars under Multiple Load Cases of the High-Aspect-Ratio Wing

Authors: Yu Li, Jingwu He, Yuexi Xiong

Abstract:

The spar layout will affect the wing’s stiffness characteristics, and irrational spar arrangement will reduce the overall bending and twisting resistance capacity of the wing. In this paper, the active structural stiffness design theory is used to match the stiffness-center axis position and load-cases under the corresponding multiple flight conditions, in order to achieve better stiffness properties of the wing. The combination of active stiffness method and principle of stiffness distribution is proved to be reasonable supplying an initial reference for wing designing. The optimized layout of spars is eventually obtained, and the high-aspect-ratio wing will have better stiffness characteristics.

Keywords: Active structural stiffness design theory, high-aspect-ratio wing, flight load cases, layout of spars.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1132258

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References:


[1] Xia Sheng-lai, He Jing-wu, Hei Li-jie, “Study on the Method of Active Structural Stiffness Design,” Aircraft Design, 2012, vol. 3, pp. 19-23.
[2] Xu YanShen, Xu Qianli, Chen Yongliang, Hou Liang, “Research on the generalized modular design method with flexible modules of product structures,” Chinese Journal of Mechanical Engineering, 2004, vol. 4, pp. 477-480.
[3] Z. C. Yang, H. Zhang, G. U. Ying-Song, M Song, “Aeroelastic analysis of the high aspect ratio wing considering the geometric nonlinearity,” Journal of Vibration, 2006, vol. 6, pp. 32-33+53.
[4] Aircraft Design Manuel (Chinese Aviation Industry Press, 2000, vol. 10, pp. 333-362).
[5] Y. L. Liu, D. M. Guo, Y. I. Xian-Zhong. Optimum Design of Mechanism based on Matlab Optimization Toolbox (J), Modern Machinery, 2006, vol. 6, pp. 32-33+53.